Bryant Legacy 549J 12 Series, Руководство по установке

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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53549013-01 Printed in U.S.A. Form II549J-12-03 Pg 1 6-2020 Replaces: II549J-12-02
Installation Instructions
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
MODEL NUMBER NOMENCLATURE AND
DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Rated Indoor Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
REFRIGERATION SYSTEM COMPONENTS . . . . . . . . 6
Reversing Valve and Check Valve Position . . . . . . . . . . . . 6
Troubleshooting Refrigerant Pressure Problems and Check
Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Refrigerant System Pressure Access Ports . . . . . . . . . . . . . 7
installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Jobsite Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Step 1 - Plan for Unit Location . . . . . . . . . . . . . . . . . . . . . . 8
• ROOF MOUNT
Step 2 - Plan for Sequence of Unit Installation . . . . . . . . . 8
• CURB-MOUNTED INSTALLATION
• PAD-MOUNTED INSTALLATION
• FRAME-MOUNTED INSTALLATION
Step 3 - Inspect Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Step 4 - Provide Unit Support . . . . . . . . . . . . . . . . . . . . . . . 8
• ROOF CURB MOUNT
• SLAB MOUNT (HORIZONTAL UNITS ONLY)
• ALTERNATE UNIT SUPPORT (IN LIEU OF CURB OR
SLAB MOUNT)
Step 5 - Field Fabricate Ductwork . . . . . . . . . . . . . . . . . . 10
• UNITS WITH ACCESSORY ELECTRIC HEATERS
Step 6 - Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . . . . 10
• POSITIONING ON CURB
Step 7 - Convert to Horizontal and Connect Ductwork
(when required) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Step 8 - Install Outside Air Hood . . . . . . . . . . . . . . . . . . . 12
• ECONOMIZER HOOD REMOVAL AND SETUP (FAC -
TORY OPTION)
• TWO-POSITION DAMPER HOOD REMOVAL AND
SETUP (FACTORY OPTION)
• ECONOMIZER AND TWO-POSITION HOOD ASSEM -
BLY
Step 9 - Install External Condensate Trap and Line . . . . 13
Step 10 - Make Electrical Connections . . . . . . . . . . . . . . . 14
• FIELD POWER SUPPLY
• ALL UNITS
• UNITS WITHOUT FACTORY-INSTALLED NON-
FUSED DISCONNECT
• UNITS WITH FACTORY-INSTALLED NON-FUSED
DISCONNECT
• CONVENIENCE OUTLETS
• FACTORY-OPTION THRU-BASE CONNECTIONS
• UNITS WITHOUT THRU-BASE CONNECTIONS
• FIELD CONTROL WIRING
• THERMOSTAT
• CENTRAL TERMINAL BOARD
• COMMERCIAL DEFROST CONTROL
• UNIT WITHOUT THRU-BASE CONNECTION KIT
• HEAT ANTICIPATOR SETTINGS
• ELECTRIC HEATERS
• CONTROL AND POWER WIRING DIAGRAMS
EconoMi$er® X (Factory Option) . . . . . . . . . . . . . . . . . . 27
• SYSTEM COMPONENTS
• SPECIFICATIONS
• INPUTS
• OUTPUTS
• ENVIRONMENTAL
• ECONOMIZER MODULE WIRING DETAILS
• S-BUS SENSOR WIRING
• CO2 SENSOR WIRING
• INTERFACE OVERVIEW
• SETUP AND CONFIGURATION
• TIME-OUT AND SCREENSAVER
• ENTHALPY SETTINGS
• TWO-SPEED FAN OPERATION
• CHECKOUT
• TROUBLESHOOTING
Smoke Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
• COMPLETING RETURN AIR SMOKE SENSOR
INSTALLATION
• ADDITIONAL APPLICATION DATA
2-Speed Indoor Fan Motor System with Variable
Frequency Drive (Factory-Installed Option) . . . . . . . 40
RTU OPEN Controller (Factory option) . . . . . . . . . . . . . 40
Controller Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
• LOW AMBIENT
Step 11 - Adjust Factory-Installed Options . . . . . . . . . . . 40
• SMOKE DETECTORS
• ECONOMI$ER IV OCCUPANCY SWITCH
Step 12 - Install Accessories . . . . . . . . . . . . . . . . . . . . . . . . 40
Step 13 - Check Belt Tension . . . . . . . . . . . . . . . . . . . . . . . 41
• BELT FORCE — DEFLECTION METHOD
• BELT TENSION METHOD
Pre-Start and Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Start-Up Checklist for 549J12 Single Package Rooftop Heat
Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . CL-1
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can be
hazardous due to system pressure and electrical components.
Only trained and qualified service personnel should install,
repair, or service air-conditioning equipment.
Untrained personnel can perform basic maintenance functions
of cleaning coils and filters and replacing filters. All other
operations should be performed by trained service personnel.
When working on air-conditioning equipment, observe
precautions in the literature, tags and labels attached to the
unit, and other safety precautions that may apply.
Follow all safety codes, including ANSI (American National
Standards Institute) Z223.1. Wear safety glasses and work
gloves. Use quenching cloth for unbrazing operations. Have
fire extinguisher available for all brazing operations.
It is important to recognize safety information. This is the
safety-alert symbol . When you see this symbol on the unit
and in instructions or manuals, be alert to the potential for
personal injury.
Legacy Line
549J*12
Single Package Rooftop Heat Pump
with Puron
®
(R-410A) Refrigerant